Report_3_Geotech.pdf

TO MESSAGE/COMMENT FROM/DATE

Appendix No. 1

Project Location Map

SHEET

NO. PROJECT

STATEREG

JOHE 10(1), 100(1)

TOTAL

SHEETS

1PA

FIGURE 1

Project Location Map

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL LANDS HIGHWAY DIVISION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

STERLING, VIRGINIA

Appendix No. 2

Borings Location Map

Appendix No. 3

Boring Logs

Appendix No. 4

Field Infiltration Tests Data

Boring B-1

Soaking Data

Date

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr)

5/13/15 12:35 PM 3.10 -- --

5/14/15 7:20 AM 4.79 Dry 20.28 >1.08

Note: No water in bottom of pipe at second reading.

Infiltration Testing Data

Time

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr) Remarks

5/14/15 7:22 AM 3.06 - - - Start Test 5/14/15 8:16 AM 3.23 0.17 2.04 2.04* Reading 5/14/15 9:17 AM 3.40 0.17 2.04 2.04* Reading 5/14/15 9:17 AM 3.07 - - - Add water 5/14/15 10:17 AM 3.24 0.17 2.04 2.04* Reading 5/14/15 11:16 AM 3.42 0.18 2.16 2.16* Reading

Notes:

All measurements are from top of the casing (TOC).

Measurements were taken with a water meter with an accuracy of 0.01 ft.

Bottom of the PVC pipe is at a depth of 2± ft below existing ground surface.

No coarse sand or fine gravel was placed on the bottom of the hole.

* This rate is unrealistically high and should not be considered in design computations. It is possible that the bottom of the PVC pipe has “rested” on a piece of gravel that existed in the fill materials.

Recommended field infiltration rate: 0.12 inch/hr, to be consistent with the other infiltration rates measured.

Boring B-2

Date

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr)

5/13/15 9:45 AM 2.50 -- --

5/14/15 7:07 AM 2.90 0.40 4.80 0.22

Infiltration Testing Data

Time

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr) Remarks

5/14/15 7:12 AM 2.48 - - - Start Test 5/14/15 8:07 AM 2.48 0.00 0.00 0.00 Reading 5/14/15 9:07 AM 2.49 0.01 0.12 0.12 Reading 5/14/15 10:06 AM 2.51 0.02 0.24 0.24 Reading 5/14/15 11:08 AM 2.51 <0.01 <0.01 <0.01 Reading

Notes:

All measurements are from top of the casing (TOC).

Measurements were taken with a water meter with an accuracy of 0.01 ft.

Bottom of the PVC pipe is at a depth of 2± ft below existing ground surface.

No coarse sand or fine gravel was placed on the bottom of the hole.

Recommended field infiltration rate: 0.12 inch/hr, Boring B-3

Date

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr)

5/13/15 11:07 AM 2.80 -- --

5/14/15 7:15 AM 2.99 0.19 2.28 0.11

Infiltration Testing Data

Time

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr) Remarks

5/14/15 7:16 AM 2.72 - - - Start Test 5/14/15 8:14 AM 2.73 0.01 0.12 0.12 Reading 5/14/15 9:14 AM 2.74 0.01 0.12 0.12 Reading 5/14/15 10:07 AM 2.76 0.02 0.24 0.24 Reading 5/14/15 11:09 AM 2.78 0.02 0.24 0.24 Reading

Notes:

All measurements are from top of the casing (TOC).

Measurements were taken with a water meter with an accuracy of 0.01 ft.

Bottom of the PVC pipe is at a depth of 2± ft below existing ground surface.

Recommended field infiltration rate: 0.12 inch/hr

Boring B-4

Date

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr)

5/13/15 1:25 PM 2.60 -- --

5/14/15 7:23 AM 2.64 0.04 0.48 0.03

Infiltration Testing Data

Time

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr) Remarks

5/14/15 7:23 AM 2.64 - - - Start Test 5/14/15 8:20 AM 2.64 0.00 0.00 0.00 Reading 5/14/15 9:20 AM 2.64 0.00 0.00 0.00 Reading 5/14/15 10:19 AM 2.65 0.01 0.12 0.12 Reading 5/14/15 11:21 AM 2.65 <0.01 <0.01 <0.01 Reading

Notes:

All measurements are from top of the casing (TOC).

Measurements were taken with a water meter with an accuracy of 0.01 ft.

Bottom of the PVC pipe is at a depth of 2± ft below existing ground surface.

Boring B-5

Date

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr)

5/13/15 2:00 PM 3.00 -- --

5/14/15 7:25 AM 3.02 0.02 0.24 0.01

Infiltration Testing Data

Time

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr) Remarks

5/14/15 7:25 AM 3.02 - - - Start Test 5/14/15 8:22 AM 3.02 0.00 0.00 0.00 Reading 5/14/15 9:21 AM 3.04 0.02 0.24 0.24 Reading 5/14/15 10:20 AM 3.05 0.01 0.12 0.12 Reading 5/14/15 11:23 AM 3.06 0.01 0.12 0.12 Reading

Notes:

All measurements are from top of the casing (TOC).

Measurements were taken with a water meter with an accuracy of 0.01 ft.

Bottom of the PVC pipe is at a depth of 2± ft below existing ground surface.

Boring B-6

Date

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr)

5/13/15 2:40 PM 2.80 -- --

5/14/15 7:28 AM 3.06 0.26 3.12 0.19

Infiltration Testing Data

Time

Depth to water surface

(ft)

Drop

(ft) Drop (in)

Infiltration Rate

(in/hr) Remarks

5/14/15 7:30 AM 2.78 - - - Start Test 5/14/15 8:23 AM 2.80 0.02 0.24 0.24 Reading 5/14/15 9:23 AM 2.83 0.03 0.36 0.36 Reading 5/14/15 10:21 AM 2.85 0.02 0.24 0.24 Reading 5/14/15 11:25 AM 2.88 0.03 0.36 0.36 Reading

Notes:

All measurements are from top of the casing (TOC).

Measurements were taken with a water meter with an accuracy of 0.01 ft.

Bottom of the PVC pipe is at a depth of 2± ft below existing ground surface.

Recommended field infiltration rate: 0.24 inch/hr

Appendix No. 5

Selected Photographs

Photo No. 1 Boring B-2, Sample J-4, 8’ to 10’, note the fill material

Photo No. 2 Boring B-2, Sample J-4, 8’ to 10’, note the soils discoloration

Photo No. 3 Boring B-2, auger cuttings, note the soils discoloration

Photo No. 4 Boring B-2, Sample J-6, 13’ to 15’, note the clay material

Photo No. 5 Boring B-4, Sample J-4, 4’ to 6’, not the soil discoloration

Photo No. 6 Boring B-4, Sample J-2, 2’ to 4’, note the construction debris